The Acudor AS-9000 is a fully gasketed access door, designed for use in walls and ceilings. The formed door panel with a concealed hinge and closed cell neoprene gasket provides for a tight fit. Most popular in Stainless Steel, with a #4 satin polish, this door is the perfect choice for clean rooms, laboratories, operating rooms, etc. Also available in Primer Coated Steel. Please note that although being fully gasketed the AS-9000 door has not been tested for air penetration.